Present progressive

The present progressive, also called the present continuous, is formed with the verb BE conjugated in the simple present followed by a present participle.

Modal verbs

This lesson explains the grammar of modal verbs and where they are placed in a sentence or question.

Past perfect progressive

The past perfect progressive, also called the pluperfect progressive is a compound verb form. It requires three verbs: had + been + verb+ing.

Verb DO

The verb DO plays an enormous role in the English language. It is the most important verb after BE.